I had my surgery almost 2 years ago and now I am dealing with my right nipple totally sucking in about 1/8"- 1/4" when its warm and I flex or raise my arms, it is quite noticeable and is driving me crazy! Around 3 months ago I had a procedure done with my surgeon and he pretty much released the scar tissue with this needle tool. once all the swelling went away I was left with a slightly better issue. He seems to think that it is only tethering to the muscle but I think he just removed to much tissue.